San Quentin, California - Condemned inmate Michael Lamont Jones, 44, who was on California’s death row from Riverside County, was pronounced dead at San Quentin State Prison on Monday afternoon, May 25, 2015, at 3:51 p.m. The cause of death is pending the results of an autopsy; however, the death is being investigated as a suicide. Jones was single-celled.

Jones was sentenced to death on December 13, 1991, by a Riverside County jury, for the January 21, 1989, murder of Herman Weeks, 24, during the armed robbery of a Domino’s Pizza store. Jones had been on death row since January 2, 1992.

Since 1978 when California reinstated capital punishment, 66 condemned inmates have died from natural causes, 24 have committed suicide, 13 have been executed in California, one was executed in Missouri, seven have died from other causes and the causes of death are pending for four condemned inmates. There are 749 people on California’s death row.